APA Style

Keene, Carolyn.. (2003). Nancy's Mysterious Letter . New York: Grosset & Dunlap.

Chicago Style

Keene, Carolyn.. Nancy's Mysterious Letter. New York: Grosset & Dunlap, 2003. Text.

MLA Style

Keene, Carolyn.. Nancy's Mysterious Letter. New York: Grosset & Dunlap, 2003. Text.

Turabian Style

Keene, Carolyn.. Nancy's Mysterious Letter. New York: Grosset & Dunlap, 2003. Print.